5079590438

Committed 25 May 2023 12:28PM UTC coverage: 92.228% (+0.5%) from 91.723%

Build # 5079590438

Build Type

Pull #3502

github

Pull Request Pull Request #3502: Apply clang-format to the codebase

Run Details

75589 of 81959 relevant lines covered (92.23%)

12139530.51 hits per line

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86.36

/src/lib/math/bigint/big_rand.cpp

/*
* BigInt Random Generation
* (C) 1999-2007 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include <botan/bigint.h>

#include <botan/rng.h>
#include <botan/internal/rounding.h>

namespace Botan {

/*
* Randomize this number
*/
void BigInt::randomize(RandomNumberGenerator& rng, size_t bitsize, bool set_high_bit) {
   set_sign(Positive);

   if(bitsize == 0) {
      clear();
   } else {
      secure_vector<uint8_t> array = rng.random_vec(round_up(bitsize, 8) / 8);

      // Always cut unwanted bits
      if(bitsize % 8)
         array[0] &= 0xFF >> (8 - (bitsize % 8));

      // Set the highest bit if wanted
      if(set_high_bit)
         array[0] |= 0x80 >> ((bitsize % 8) ? (8 - bitsize % 8) : 0);

      binary_decode(array);
   }
}

/*
* Generate a random integer within given range
*/
BigInt BigInt::random_integer(RandomNumberGenerator& rng, const BigInt& min, const BigInt& max) {
   if(min.is_negative() || max.is_negative() || max <= min)
      throw Invalid_Argument("BigInt::random_integer invalid range");

   BigInt r;

   const size_t bits = max.bits();

   do {
      r.randomize(rng, bits, false);
   } while(r < min || r >= max);

   return r;
}

}

1	/*
2	* BigInt Random Generation
3	* (C) 1999-2007 Jack Lloyd
4	*
5	* Botan is released under the Simplified BSD License (see license.txt)
6	*/
7
8	#include <botan/bigint.h>
9
10	#include <botan/rng.h>
11	#include <botan/internal/rounding.h>
12
13	namespace Botan {
14
15	/*
16	* Randomize this number
17	*/
18	void BigInt::randomize(RandomNumberGenerator& rng, size_t bitsize, bool set_high_bit) {	304,287✔
19	set_sign(Positive);	304,287✔
20
21	if(bitsize == 0) {	304,287✔
22	clear();	×
23	} else {
24	secure_vector<uint8_t> array = rng.random_vec(round_up(bitsize, 8) / 8);	548,944✔
25
26	// Always cut unwanted bits
27	if(bitsize % 8)	304,286✔
28	array[0] &= 0xFF >> (8 - (bitsize % 8));	244,656✔
29
30	// Set the highest bit if wanted
31	if(set_high_bit)	304,286✔
32	array[0] \|= 0x80 >> ((bitsize % 8) ? (8 - bitsize % 8) : 0);	21,512✔
33
34	binary_decode(array);	608,572✔
35	}	304,286✔
36	}	304,286✔
37
38	/*
39	* Generate a random integer within given range
40	*/
41	BigInt BigInt::random_integer(RandomNumberGenerator& rng, const BigInt& min, const BigInt& max) {	160,618✔
42	if(min.is_negative() \|\| max.is_negative() \|\| max <= min)	321,236✔
43	throw Invalid_Argument("BigInt::random_integer invalid range");	×
44
45	BigInt r;	160,618✔
46
47	const size_t bits = max.bits();	160,618✔
48
49	do {	238,037✔
50	r.randomize(rng, bits, false);	238,037✔
51	} while(r < min \|\| r >= max);	476,068✔
52
53	return r;	160,618✔
54	}	×
55
56	}

randombit / botan / 5079590438

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